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1. |
Record Nr. |
UNISALENTO991000040159707536 |
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Autore |
Libera cattedra di storia della civiltà fiorentina |
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Titolo |
Secoli vari : '300-'400-'500 |
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Pubbl/distr/stampa |
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Firenze : Sansoni, stampa 1958 |
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Descrizione fisica |
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Disciplina |
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Soggetti |
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Firenze - Cultura e civiltà |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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In testa al front.: Libera cattedra in storia della civiltà fiorentina (Unione Fiorentina) |
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2. |
Record Nr. |
UNINA9910826821803321 |
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Autore |
Maretina Irina A |
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Titolo |
Alkynes in cycloadditions / / author, Irina A. Maretina ; translated from the Russian by Boris I. Ionin ; consulting editor, John C. Tebby |
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Pubbl/distr/stampa |
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Chichester, West Sussex : , : John Wiley & Sons, Inc., , 2014 |
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ISBN |
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1-118-70929-2 |
1-118-70931-4 |
1-118-70933-0 |
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Descrizione fisica |
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1 online resource (312 p.) |
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Altri autori (Persone) |
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TebbyJohn C. <1933-> |
IoninB. I |
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Disciplina |
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Soggetti |
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Alkynes |
Ring formation (Chemistry) |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di contenuto |
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Alkynes in Cycloadditions; Contents; Preface; Acknowledgments; Biography; 1 Introduction; 2 Regioselective Syntheses of Polysubstituted Benzenes Catalyzed by Transition Metal Complexes; 2.1 [2+2+2] Cycloaddition Reactions of Acetylenes; 2.1.1 Reactions of Alkynes with Metallocyclopentadiene as an Intermediate; 2.1.2 Intra-intermolecular [2+2+2] Cycloaddition of Alkynes; 2.2 Stereochemical Aspect of Intramolecular and Intermolecular Reactions of Diynes with Monoalkynes; 2.2.1 Strategy of Enantioselective [2+2+2] Cycloaddition; 2.3 Heteroatom Bound to the Triple Bond |
2.3.1 Nitrogen-Containing Substrates2.3.2 [2+2+2] Cycloadditions of Alkynes to Nitriles: Synthesis of Pyridines; 2.4 Heterohelicens. Asymmetric Syntheses; 2.4.1 Oxygen-Containing Helicens; 2.4.2 Nitrogen-Containing Helicens. Helical Dications; 2.5 Aromatic Rings with Boron and Silicon Substituents; 2.6 [2+2+2] Cycloaddition Reactions of 1-Alkynylphosphines and Their Derivatives; 2.7 Intramolecular [2+2+2] Cycloaddition of Diynes to Alkenes; 2.7.1 Allene as an Alkene Component; 2.7.2 Formation of Polycyclic Cyclohexadienes by Ru-catalyzed Cascade Reactions of 1,6-Diynes and Alkenes |
2.7.3 Stereochemical Aspects of the Reaction of Diynes with Alkenes2.7.4 Hetero-[2+2+2] Cycloaddition of Alkynes to Compounds with a Multiple Carbon-Heteroatom Bond; 2.8 Reactions of [4+2] Cycloaddition and Other Approaches to the Synthesis of Polysubstituted Benzenes; 2.8.1 Reactions of Conjugated Enynes; 2.8.2 Acceleration of Pd-catalyzed [4+2]-Benzannulation in the Reaction of Enynes and Diynes in the Presence of Lewis Acids and Bronsted Bases; 2.9 Combined Reactions |
2.9.1 Formal [4+2+2] Cycloaddition of 1,6-Diynes to 1,3-Dienes Catalyzed by Ru: Formation of Cyclooctatrienes and Vinylcyclohexadienes2.9.2 Formation of Eight-Membered Ring Systems by [4+2+2] Annulation; 2.9.3 AuBr3 (AlCl3)- and Cu(OTf)2-Catalyzed [4+2] Cycloaddition of Alkynyl- and Alkenyl-Enynones and Enynals: An Approach to Functionalized Polycyclic Hydrocarbons; 2.10 Construction of Polycyclic Systems; 2.10.1 Strategies for the Synthesis of Steroid Systems by Co-catalyzed [2+2+2] Cycloaddition of Nonconjugated Enyne-Allenes and Enediynes |
2.10.2 Cobalt(I)-Mediated [2+2+2] Cyclization of Allene-Diynes: A Diastereoselective Approach to 11-aryl Steroid Core. 11-Aryl-Substituted Steroid Systems by Co-catalyzed [2+2+2] Cyclization of Allene-Diynes2.10.3 Synthesis of (3S)-hydroxyandrosta-5,7-diene-17-ones via Intramolecular Cobalt-Mediated [2+2+2] Cycloaddition; 2.10.4 Intramolecular Cycloaddition of Nonconjugated Enediynes of a Higher Order as a Route to Functionalized Condensed Polycyclic Systems; 2.10.5 A Strategy for the Synthesis of Aromatic Molecular-Bowl Hydrocarbons |
2.10.6 A Route to Archimedenes: Total Synthesis of C3h-symmetric [7]phenylenes |
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Sommario/riassunto |
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Acetylene systems present a new route to cyclic compounds as an alternative to more traditional methods employed in classical organic chemistry. The synthesis of cyclic structures based on acetylene systems has important applications in the formation of nanostructures, naturally occurring compounds and chemosensory materials for the design of nonlinear optics, electronic and photonic devices. Alkynes in Cycloadditions presents a modern review of regioselective synthesis of aromatic and non-aromatic carbocyclic and heterocyclic ring systems based primarily on [2+2+2] and [4+2] c |
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